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faulthandler now works in non-Python threads

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Issue #26563:

* Add _PyGILState_GetInterpreterStateUnsafe() function: the single
  PyInterpreterState used by this process' GILState implementation.
* Enhance _Py_DumpTracebackThreads() to retrieve the interpreter state from
  autoInterpreterState in last resort. The function now accepts NULL for interp
  and current_tstate parameters.
* test_faulthandler: fix a ResourceWarning when test is interrupted by CTRL+c
This commit is contained in:
Victor Stinner 2016-03-16 22:45:24 +01:00
parent c36674a2c5
commit 861d9abfcf
7 changed files with 164 additions and 48 deletions
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21
Include/traceback.h
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@ -53,19 +53,32 @@ PyAPI_DATA(void) _Py_DumpTraceback(
PyThreadState *tstate);
/* Write the traceback of all threads into the file 'fd'. current_thread can be
NULL. Return NULL on success, or an error message on error.
NULL.
Return NULL on success, or an error message on error.
This function is written for debug purpose only. It calls
_Py_DumpTraceback() for each thread, and so has the same limitations. It
only write the traceback of the first 100 threads: write "..." if there are
more threads.
If current_tstate is NULL, the function tries to get the Python thread state
of the current thread. It is not an error if the function is unable to get
the current Python thread state.
If interp is NULL, the function tries to get the interpreter state from
the current Python thread state, or from
_PyGILState_GetInterpreterStateUnsafe() in last resort.
It is better to pass NULL to interp and current_tstate, the function tries
different options to retrieve these informations.
This function is signal safe. */
PyAPI_DATA(const char*) _Py_DumpTracebackThreads(
int fd, PyInterpreterState *interp,
PyThreadState *current_thread);
int fd,
PyInterpreterState *interp,
PyThreadState *current_tstate);
#ifndef Py_LIMITED_API